Group Project: Rotary Broach-- Building complete, all shipped out!

So….I’ve never used one before, and this where I’ll ask how to set the offset…didn’t have great luck with 12L14 steel, but again, first time. Went to aluminum and it worked! I used the 3/8” bit which might be a bit small. I ran it a 2bd time with the hex in a different position and I could JUST force an Allen in.D0F26268-C12F-4544-AC73-FD9D3634B79A.jpeg
 
It looks like from the picture you did it right. If the 12l14 didn't work, perhaps the hole needs to be a touch larger? Or the chamfer?

I ground the cutters to the values on the paragon website, but those were perhaps too small :( if you rotated it and did better, I might not have ground that one perfectly even, I know the 3/8" ones were the first I ground, so perhaps the least consistent.
 
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